How do you move on from someone who is part of your life?

we're both in the same college organization, we both live in the same dormitory, we're blocmates, we have 200+ common friends, and we're both in the same academic course. simply, we still see each other often even if we don't necessarily want to anymore.

no ill feelings, we're both just sincerely trying to move on from a break-up.

I'm just having problems moving on when she's already a big part of my life I can't really take away, I remember too much about certain things about her and I could relate a lot of random things about her still.